Which numbers are rational? 12 81, 50, -12, 0, 5 6.54
2 answers:
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<u>Answer:</u>
The element is Chromium.
<u>Explanation:</u>
The atom has 24 protons and 12 neutrons.
We know that Cr has 24 number of protons, to the Chemical is Cr (Chromium)
Again, we know that the atomic number is the number of protons and the atomic mass is the sum of proton and neutron.
So, the atomic number is 24 and the atomic mass is (24+12)= 36
Therefore, the symbol is
will have real roots when the discriminant of the quadratic,
, is non-negative, i.e.
Your question about probability is currently impossible to answer without knowing exactly what the experiment is. Are you picking at random from some interval? Is the choice of either distributed a certain way?
I'll assume the inclusion of "[0,1]" in your question is a suggestion that both are chosen indepently of one another from [0, 1]. Let
denote the random variables that take on the values of
, respectively. I'll assume
are identical and follow the standard uniform distribution, i.e. they each have the same PDF and CDF as below:
where is either of
.
Then the question is to find . We have
and we can condition the random variable on the event of
by supposing
then integrate over all possible values of .